just got my 07 4.6 Screw out of the dealer for alignment and they wrote tranny flush. is this sayin i need to drain my trans? or did they do it? i dont think they did. and it only has 37k on it

its suggested to change the trans fluid every 30k

There suggesting to flush it. Not drain and change it.
Two different procedures.

They are trying to sell you a tranny flush job. Last time I took mine in, they tried to sell me a BG intake cleaning job.

I do NOT believe in a tranny "flush" - just a "fluid exchange" without using flush chemicals.